JERS SAR interferometry for land subsidence monitoring
JERS SAR interferometry for land subsidence monitoring
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DOI：
10.1109/tgrs.2003.813273
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发表时间：
2003-08
期刊：
影响因子：
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通讯作者：
T. Strozzi;U. Wegmüller;C. Werner;A. Wiesmann;V. Spreckels
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文献类型：
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作者：
T. Strozzi;U. Wegmüller;C. Werner;A. Wiesmann;V. Spreckels
在本文中，L波段重复通过差分合成孔径雷达（SAR）干涉地面沉降监测的潜力进行了评估，使用日本地球资源卫星（JERS）SAR数据。博洛尼亚，墨西哥城，和鲁尔盖比耶被选为应用程序的网站代表慢到快的变形速度。调查包括可行性方面，如数据的可用性，时间去相关不同的土地覆盖类和有用的空间基线的范围内，所取得的变形精度的分析，并考虑补充欧洲遥感卫星（ERS）合成孔径雷达干涉测量和水准测量。尽管可用数据相当有限，但可以为三个选定的应用地点生成地面沉降图。与地球资源卫星C波段合成孔径雷达数据相反，日本地球资源卫星L波段干涉测量法在使用不到一年的获取时间间隔和短基线的干涉图时，可以恢复植被区和森林的沉降值。此外，较长的L波段波长被发现是上级的情况下，大的变形梯度，导致相位展开的问题，在C波段干涉。
In this paper, the potential of L-band repeat-pass differential synthetic aperture radar (SAR) interferometry for land subsidence monitoring is evaluated using Japanese Earth Resources Satellite (JERS) SAR data. Bologna, Mexico City, and the Ruhrgebiet are selected as application sites representing slow to fast deformation velocities. The investigation includes feasibility aspects such as data availability, the temporal decorrelation over different landcover classes and the range of useful spatial baselines, an analysis of the achieved deformation accuracy, and considerations on the complementarity to European Remote Sensing satellite (ERS) SAR interferometry and leveling surveys. In spite of the rather limited data availability, land subsidence maps could be generated for the three selected application sites. In contrast to ERS C-band SAR data, JERS L-band interferometry permitted the retrieval of subsidence values over vegetated areas and forest when using interferograms of less than one year acquisition time interval and short baseline. In addition, the longer L-band wavelength was found to be superior in the case of large deformation gradients that lead to phase-unwrapping problems in C-band interferometry.